Traction-machine.



G. W. MGGILL.

TRACTION MACHINE.

APPLICATION FILED JUNE 13, 1907.

Patented Apr. 26, 1910.

(/ l/ il I Wzesses UNITE sTAWENT oFFIoE.

GEORGE w. MGGIL or IENID, OKLAHOMA.

; citizen of the United States, residing atthe following is a s ecification.

'rnnc'rron-mnonmnspeeification of Letters Patent. Patented Apr. 26, 1910'. Application filed June 13, 1907. Seria1N o. 378 ,867

To all tbho'mit ma y concem:

Enid, inthe county of Garfield, Oklahoma,

vhave invented, certain new and useful Improvements in Traction-Machines, of which This invention re ates to traction machines and is designed more especially as an improvement on my similarly entitled machine on which Letters Patent"#867,828 were issued to me Oct. 8, 1907', my special object in this connection being to produce a machine possessing the advantageous features of the-onereferred to but which can bemanufactured and sold at less cost and is of simpler construction and more readily controlled.

. chine embodylng fmay be fully understood reference is' to behad to the accompanying drawing,- in which- Figure 1, is a plan view of a traction ma-- my invention. Fig; 2 is a side view-of the same. r

In the said 'drawings,'awheeled frame consists of a substantially horizontal rectangularskeleton bed 1, a caster 2, supporting one end of said bed and wheels 3 supporting the opposite-end.

4' indicates an engine mounted .on the bed and having a fly wheel 5. y 1 e A speed gear transmission indicated only ',byits casing 6, is adapted to be driven by the shaft not shown, of he engine, the shaft 7, of the transmissi n mechanism being equipped. with a sprocket wheel 8 connected by a chain 9, with the sprocket wheel 10 rigidly" secured on transverse shaft 11 journaled in the bed 1, or rather in bearings ll" dep nding from the bed, by preference.

A clutchcconsists of' the friction disk 12 connected to slide upon and rotate with shaft 11, and the companion friction disk 13 journaled on the shaft 11 and equipped witha sprocket Wheel 14 connected by chain 15 with the sprocket wheel 16 .of the type known as a compensating wheel and common in automobile construction. The comoperation ofthe companion shaft.

pensating wheel 1 6 is mounted upon a pair of alined transverse shaft'slZ-and 18 suitably journaled andequipped at. their outer ends with similar gears 19 meshing with larger gears v2O ri'gid with wheels 3 preferably by being secured on the spokes of'the latter as shown at 21 in Fig. 2.1 The com: pensating wheel is adapted under ordinary conditions to rotate shafts. 17 i and 18 at the same speed or permit either of said shafts to be retarded without interfering with the -A second clutch mounted on shaft 11 comprlses the friction disk 22, rotatablewith and slidable on the shaft and the companion friction disk 23 journaled on the shaft and equipped with a sprocket wheel24.

25 is :a sprocket chain engaging anidler sprocket wheel 26, at the opposite sideof.

shaft 11 from wheels 3 and journaled on a stub shaft 27 supported from the bed 1 as shown or in any other suitable manner. Chain 25 also engages a sprocket wheel 28 secured rigidly on shaft 18, the upper strand of the sprocket chain 25 being depressedbelow and engaging the lowerside of sprocket wheel 24.

. 29 and 30 indicate brake wheelssecured rigidly on shafts 17 and 18 respectively.

29and of common and well-known construction and connected- 'in' the usualmanner to a lever 32 so that the 'operationfof said lever shall cause the strap to bind upon wheel 29 and thus retardthe speed of shaft 17 as hereinafter referred to.

A similar strapbrake 33 g sbmke wheel 30 and is simi- .1arly connected to the lever 34 corresponding to lever 32 sothat the operation of such lever 34: shall clamp the brake strap 33' on wheel '30 and thus retard the speed of shaft 18.

36 indicates a lever pivoted to a sector :37v mounted on the bed and 38 a bar pivotally carried by the lever and pivotally connecting the corresponding ends of a pair of levers 39 and 40 mounted on a part 41 of the bed and pivotally connected to the clutch members 12 and 22, the arrangement beingsuch that when one-of the clutch mechanisms is in operative relation the other is in inoperatlve relation.

Assuming that the parts are as shown and that the machine is to travel in the direction indicated by the arrow, Fig. 1, the engine will operate so as to drive wheel 5 in the direction indicated by the arrow Fig. 2, like motion being transmitted through chain 9 and wheel 10 to shaft 11 and such movement of the shaft through the clutch 1213, Wheel 14 and chain 15 to the compensating wheel 16, the latter driving shafts 1'7 and 18 at equal speed so as to impart movement from wheels 19 and 20 to wheels 3 in the direction indicated by the arrow Fig. 2, it being understood in this connection that the clutch disks 2223 are disengaged. Should it be desired to turn the machine to the right or left while traveling as described, the right or left hand lever 32 or 34: will be operated, the result being the speed of the corresponding shaft 17 or 18 as the case maybe, will be retarded so as to cause the retarded wheel 3 to act as a pivot for the right or left hand turn as the case may be. Should the operator desire to reverse the direction of travel without turning the machine, that is, travel with the caster trailing in the rear, the parts remain in the positions shown in Fig. l, and the chain 9 is reversed, by reversing the transmission shaft 7, the means for accomplishing this purpose being omitted because of well known construction and furthermore because applicant makes no claim to the same, it being noticed that in either of the movements described, the revolution of the clutch member 23 through its engagement with chain 25 is inoperative, that is to say it turns freely on shaft 11 without affecting the operation of the latter.

Instead of turning the machine by retarding the speed of either of the shafts 17 or 18, through the agency of the connected brake, it may be turned in one direction by operating lever 36 so as to disengage clutch section 12 from clutch section 13 and throw clutch section 22 into en agement with clutch section 23. As a result of this operation chain 15 ceases to operate and chain 25 through the connected gearing, rotates the adjacent wheel 3 backward so that the mach1ne turns to the left, the left-hand wheel 3 circling around the right hand wheel 3, the latter forming the pivot of such motion.

, For making a Wide turn the proper brake is employed. For making a short or sharp turn at a corner of the field, it is referable to operate the lever 36 as explaine it being understood in this connection that as the machine is run with the same wheel 3 at the inside or toward the field irrespective of whether the caster is leading or trailing, it is unnecessary to provide means for reversing both of the wheels 3.

This machine as explained in the aforesaid patent is intended primarily to drag a plow when traveling in the direction indibeams cated by the arrow Fig. 1, and to carry a header when-traveling in-the opposite di-- rection and reference is herewith made to said application for a full understanding of the reasons why the machine is run in the manner explained, the claims in the present application being to the mechanism whereby the same results are secured.

From the above description it will be apparent that I have produced a traction engine possessing the features of advantage enumerated and I wish it to be understood that I do not desire to be restricted to the exact details of construction shown and described as obvious modifications will suggest themselves to one skilled in the art.

Having thus described the invention what I claim as new and desire to secure by Lettiers-Patent, is

1. In a machine of the character described, a wheeled frame, a pair of longitudinally alined shafts geared to wheels of said frame, a driven shaft, a clutch mechanism mounted thereon and comprising a friction disk rotatable with and longitudinallyadjustable on said shaft, a friction disk journaled on said shaft, and a wheel movable with the lastnamed disk, a wheel suitably .journaled at the opposite side of the .driven shaft from the first-named shafts, an endless chain connecting one of the first-named shafts and the last-named wheel and having one of its strands in engagement with the wheel movable with said friction disk, and means to throw said friction disks in or out of engagement.

2. In a machine of the' character described, a wheeled frame, a driven shaft journaled therein, a pair of shafts geared to the wheels of the frame, a compensating wheel mounted on said shafts, a clutch mechanism mounted on the driven shaft and connected to the compensating wheel, a second clutch mechanism mounted on the driven shaft and provided with a wheel, an idler wheel suitably journaled and a second wheel secured on one of the first-named shafts, a chain connecting the last-named wheels and having one of its strands engaging the wheel of the last-named clutch mechanism, and means for simultaneously operating said clutch mechanisms to throw one into operative and the other into inoperative relation.

3. In a machine of the character described, a wheeled frame, a drive n shaft journaled therein, a pair of shafts geared to the wheels of the frame, a compensating wheel mounted on said shafts, a clutch mechanism mounted on the driven shaft and connected to the strands engaging the wheel of the last- In testimony whereoflaflix my signature, named clutch mechanism, means for simulin the presence of two witnesses.

taneously operatin said clutch mechanisms to throw one into operative and the other GEORGE MCGILL' 5 into inoperative relation, and a brake mech- Wltnessesz 4 anism for each of the shafts upon which the W. P. M. STEVENS,

compensating wheel is mounted. G. Y. THORPE. 

